diff --git a/action.yml b/action.yml
index 1e541b2..a5d1fd8 100644
--- a/action.yml
+++ b/action.yml
@@ -73,6 +73,7 @@ runs:
       shell: bash
       run: |
         # Export environment variables
-        echo OASIS_WORKSPACE=${{ inputs.oasis-workspace }}
-        echo OASIS_WORKSPACE=${{ inputs.oasis-workspace }} >> $GITHUB_ENV
+        OASIS_WORKSPACE="${{ inputs.oasis-workspace || 'oasis' }}"
+        echo "OASIS_WORKSPACE=${OASIS_WORKSPACE}"
+        echo "OASIS_WORKSPACE=${OASIS_WORKSPACE}" >> $GITHUB_ENV